Machine for bifurcating spikes and for punching slot-holes in bolts and the like.



W. L. BAYLEY & F. B. WILSON. MACHINE FOR BIFURCATING SPIKES AND FOR PUNCHING SLOT HOLES IN BOLTS AND THE LIKE.

I APPLICATION FILEDl MAY 8.1917. 1,244,017".

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Patented Oct. 23, 1917.

W. L. BAYLEY & F. B. WILSON.

MACHINE FUR BIruRcATlNG sPIKEs AND FOR PuNcHING sLoT HOLES |N BoLTs- AND THE UNE.

APPLICATION FILED MAY 8, 19H.

1,244,017. Patented oct. 23,1917.

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W. L. BAYLEY & F. B. WILSON. l

MACHINE FOR BlruRcATlNG SPIKES AND ma PuNcHlNG sLoT HOLES IN oLTs AND THE LIKE.

I APPLICATION FILED MAY 8, |917.

' Patented oet. 1917..

3 SHEETS-SHEET 3.

770-1 www WTA/ A fria -ricj WILLIAM LLOYD BAYLEY, 0E DARLASTON, AND`FRANK`BAXTER`WILSON, 0F WILLENI-IALL, ENGLAND. y

MACHINE FOR BIFURCATING SPIKES AND FOR PUNO-HING lSl".0'l.-I[]I0LES IN IBQLTS .ANDV

THE LIKE.

l Specification of Letters Patent. Patented @(315,23, 1917,.;

Application led May 8, 1917. Serial No. 167,226.

To aZZ whom t may concern f Be it known that we, WILLIAM LLOYD BAYLEY and FRANK BAXTER WILSON residing, respectively, at 69 l/Valsall road, Darlaston, England, and at 60k Walsall road, Villenhall, England, subjects-of His Majesty the, King of Great, Britain and Ireland, have invented certain new and usefullmpiovements in and Connected with Machines for Bifurcating-Spikes and -for Punching Slot-Holes in Bolts and the like, of which the following is a specification.

This invention has reference to machines for bifurcating spikes and for punching slot holes in bolts and the like. v

i The said bifurcated spikes are formed by punching a piece longitudinally out of the shank for a certain distancerup from .its end thereby dividing that portion ofthe shank into two legs the inner surfaces of which are sometimes smooth and sometimes formed with rabbeted inclines so as to afford a better grip in the wood into which the spike is driven. Our invention comprises improvements in the means `for holding and supporting `the spike bolt or the like during lthe bifurcating or punching process. l 1

According to this invention any laterali displacement of the spike or bolt, lwhile the punch is passing through the same, is prevented by a pair of horizontal gripping slides which are arranged immediately underthe stripping plate and on the-top of the bottom die and are operated by inclined parts carried by the main slide so as to close. toward one another on to the spike or bolt and grip the same suiilcientlyto cause it to maintain yits central position under the punch while the latter descends to bifurcate the spike or to punch a cotter hole the bolt orthe like. In combinationwith these gripping slidesk we provide a moving end stopV member'which moves down in front of and in contact with thehead of the spike or bolt just before thepunch commences to act, thereby, with the fixed stop .at the other end of the spike or bolt, preventing any endwise movement of the same during the bifurcating or punching process.A

Our said invention also comprises means combined with the main slideand its side bars lfor the purpose of tending to arrest the main slide at the top of its stroke and to keep the slide in that position, if so desired, after the punch has bifurcated or punched the spike or bolt, so as to enable the spike or bolt to be withdrawn from the gripping slides while themain slideis at the top of its stroke and another -spike or bolt placed in position on the bottom die ready for bifurcating or punching.

' p The accompanying drawings illustrate the preferred arrangement of carrying our said invention into practice.

Of these drawings Figure-l is a sectional Fig. 5 isa sectional side lelevation taken on 'l Figgcis a frontelevationy of the forked guide part Yof the mechanism Ishown in Fig. 2; Figi-is a side'elevaticn and Fig. 8 a plan of thesame; Y

',F'g. 9 isa front ,elevation ofy themechanism shown in Figs.v 1, 2 and 5,and Y p j Fig. l0 isa sectional Z-Z of Fig. 9.

plan taken on line v- In the preferred arrangement, of carrying our4 invention into practice we` employfa punching press of. the well known type which is used for punching and shearing and hasa main slide l carrying the punch 2 and-workingvertically up and down in suitable guides 3,A of the machine framel and operated by a crank-pin 5 in asleeve 6 working in avhorizontalslot 7 ofthe main slide l. 8 'and 9 are the two horizontalv gripping slidescwhich arearranged to slide horizontallyin cross guide groovesof theiixed table l0. which carries the perforated bottom die 11.011 which .is placedthe spike or bolt `'l2 which is! to be bifurcated` orA punched.. Immediately above these horizontal Vgripping slides and fixedto themachine table l0 as by the ,two-up-'standing studs 13, 14, is the stripping plate 15' which is'perforated at 16 to allow. theV punch 2' tov pass through it.

The thickness of the gripping slides 8, 9, is

slightly greater than the diameter or thickness of the spike or bolt 12 see Figs. 1 and 5 so as to allow clearance between the underside of the stripping plate and the top of the spike or bolt. The studs 13, 14, which are screwed into the machine table 10, are formed with collars 17 just enough thicker than the thickness of the gripping slides 6, 9, to permit the slides to freely slide to and fro below the stripping plate 15 fixed by the nuts 13 on the collars; vthese relative thicknesses, for purposes of clarity, not being shown in the drawings. The gripping slides 3, 9, are slotted at 60 to clear the collars 17. Fixed to the sides of the main slide 1 are two downwardly projecting bars 19, 20 made with wearing faces which are inclined at 21 and flat at 22 and 23 above and below the inclined part 21 and these are arranged to act against wearing pieces 61 fixed on. the outer ends of the gripping slides 8, 9, so as to force the gripping slides 8, 9, together at the proper time in the working of the machine as hereinafter described and to hold them` closed against the sides of the spike or bolt while the punch passes therethrough and also to permit 'the gripping slides S, 9, moving apart at the proper times to release the spike or bolt as hereinafter described.

1n order to support the downwardly projecting bars 19, 20 against lateral or bending pressure, two bearing rollers 25 are provided for each downwardljT projecting bar at the opposite sides of the same to the gripping slides 8, 9, these bearing rollers being adapted to turn in bearings 26 in side brackets 27 which are ixed to or formed with the machine table near the outer ends of the gripping slides 8, 9 (see Fig. 1). rIhe gripping slides 8, 9, are forced outwardly against the acting faces of the downwardly projecting bars by compression springs 28 arranged in recesses in the machine table 1.0

and adapted to act between projections 29 fixed on the gripping slides and the solid ends 30 of the recesses in which the compression springs are situated.

The spike or bolt 12 to be bifurcated or punched is suitably heated and while the moving stop member hereinafter described is in its highest raised position the spike or bolt is inserted shank end irst intothe space between the bottom die 11 and the stripping plate 15 and between the adjacent ends of the gripping slides 8, 9, up to a suitable stop 31, and in order to maintain the spike or bolt 12 in this position against the stop 31 the moving stop member above re.- ferred to is provided. This moving stop member preferably consists of a block 32 formed with and carried by a forked guide piece made with two downwardly projecting legs 33, 34, arranged at a convenient distance apart and parallel with one another and adapted to move up and down in guide holes 35 in the machine table 10. rPhe vobject of the guide being forked as aforesaid is to permit of the spikes or bolts 12 being fed one at a time or withdrawn under the block 32 between the two legs 33, 34. The said moving stop member is preferably furnished with a roller 49 mounted on a Ihorizontal pin 39 and adapted to act against the end of the head of the spike or bolt 12 and to remain in that position (see Fig. 5) during the bifurcating or punching process. The moving stop member 32, 33, 34 is caused to move up and down the guide holes 35 by being` connected to a cam slide bar preferably made in two parts 36, 37 which are jointed together at 33 and are adapted to move up and down in a vertical guide or groove 39 formed in the front plate 40 which is fixed to the front'of the machine frame in front of the main slide 1 and is furnishedV with an outer bearing 41 for the reduced part 42 of the crank shaft 5X which is continued at 43 beyond the bearing' 41 and on this outer end portion of the crank shaft there is provided a `grooved face cam 44 in the groove of which engages a roller 45 adapted to revolve on a pin 46 formed on the upper end of tlieulpper part 37 of the cam slide bar. The lower end of the cam slide bar is made with a forward projection 47 which engages with a recess 43 in the block 32 of the movable stop member as in Fig. 5. This cam 44 is so shaped and timed that just before the punch 2 is commencing its work the cam 44 forces the moving stop member downwardly and causes the roller 49 carried thereby to bear against the end of the head of the spike or bolt 12 and thus as laforf-zsaid prevent any longitudinal expansion of the spike or bolt 12 during the process of bifurcating or punching. At the termination of this process, just before the punch 2 commences to move upwardly the moving stop member 32, 33, 34 with its roller 49 is raised clear of the head of the spike or bolt to permit f of the expansion of the same as the punch rises as aforesaid. 50 is a small cover plate which is provided over the vertical slot 39 in the large front plate40 and is secured thereto as by bolts 51 so that by first removing this sm all cover plate 50 the lower portion 36 of the cam slide bar can be turned outwardly `as shown by the dotted lines in Fig. 5 clear of the movable stop member so as to enable the latter to be raised out of the guide holes 35 and removed when required. The whole of the cam slide bar 3.6, 37 can readily be removed when required by first removing the cap 52 from the end portion 43 of the crank shaft and then sliding the cam 44 backwardly until its groovel is, clear of the after the main. driving clutch of the crank shaft has been thrown out 0f gear, we provide on the front cover 40 one, two, or more preferably two, friction plungers 53 (see F ig. l0) made with rounded or other shaped nose ends 54C as may be suitably adapted to engage in depressions 55 in the front face of the main slide l when the latter is at the top of its stroke thus tending to arrest Jthe main slide in that position when the main driving clutch on the crank shaft has been thrown out. Each of these spring plungers can conveniently consist of a round part 53 working transversely in a cross hole 56 in the slide cover 40. and continuously pressed against the face of the main slide l by means of a concealed coiled wire spring GQ which acts between the shoulder 57 of the plunger and the inside of the outer end of the tubular casing or guide 58 which is fixed to the front of the main slide cover and in which the plunger works, said plunger having a tail end 59 of reduced diameter which projects through the front of the guide or casing 58.

Our said invention is applied to presses for punching cotter holes in bolt-s and the like similarly as above described and illustrated as applied to a press for bifurcating or punching spikes.

The accompanying drawings illustrate what we consider to be the best way of carrying our said invention into practice but it is to be understood that our invention is not limited to the precise details shown as it will be evident that these may be varied to some extent without departing from the nature of our invention as dened by the appended claims.

What we claim as our invention and desire to secure by Let-ters Patent is 1. In a machine for punching bolts or the like, the combination of a main slide, a punch carried thereby, a bottom die, a stripping plate, two gripping slides arranged under the stripping plate and immediately over the bottom die andmovable to grip andv support the sides Iof the spike or bolt in position under the punch and to release the spike or bolt when punched, means for guiding said gripping'slides, two bars operatively connected to the main slide and the gripping slides to operate the gripping slides in timed relation to the main slide, and means for supporting the ends of the spike or bolt during the punching operation, substantially as set forth. y

2. In a machine for punching bolts or the like the combination of a main slide, a punch carried thereby, a crankshaft,a sleeve on the shaft, the punch having a slot in which the sleeve works, a cam on vthe shaft, a forked slide operated by a connection from said cam, means for guidingsaid forked slide, said forked slide carrying a roller adapted to move down against the end of the spike or bolt and prevent endwisek eX- pansion of the same during the punching Vprocess and also to rise clear of the spike or bolt after the same has been punched substantially as set forth.

In testimony whereof we aiiix our signatures in presence of two witnesses.

' WILLIAM LLOYD BAYLEY.

FRANK BAXTER WILSON. Witnesses:

CHARLES BoswoR'rH KETLEY, BERTHA MATILDA DEELEY.

Copies of this patent may be obtained for five centsv each, by addressing the Commissioner of Patents,

Washington, I). C. 

